The Englishman, who won the KLM Open in August, held off strong challenges from Rory McIlroy and Oliver Wilson, but after four birdies in his first five holes, the 31-year-old never looked like surrendering his lead.
The €540,440 prize money also means Dyson has fired himself into the Race to Dubai’s top ten.
In a day of low scoring, Wilson closed with a seven-under 65 to claim joint second, but there were birdies all over the course with several players such as Padraig Harrington, who shot a 66, left ruing average rounds the day before.
Overnight leader Luke Donald was one of only a few players over par which resulted in a tie for seventh. Meanwhile, Lee Westwood closed with a 69 for another top-ten finish and the European Tour’s most recent winner Rafael Cabrera-Bello carded a 69 to finish in a tie for third.
Next week the European Tour heads to Centro Nacional de Golf, Madrid, Spain, for the Madrid Masters.